Type-writing machine.



A. E. KARLBERG & M. B. SARGENT.

TYPE WRITING MACHINE.

APPLICATION FILED APB-,7, 1914.

Patented July 28,1914.

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W1 NE SE5 I (m 1A. B. KARLBERG & M. B. SARGBNT.

TYPE WRITING MACHINE.

APPLICATION FILED APBHT, 1914.

Patented July .28, 19%

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[TNESSES I. flNVENfoR Allomey earns PATENT orrio t.

ABVID EMANUEL KARLBERG AND MARSHALL BID WELL SARGENT, 0F OWENSBORO,KENTUOKY,, ASSIGNOIRS TO THE STENOTYPE COMPANY, OF INDIANAPOLIS,

INDIANA.

TYPE-WRITING MACHINE.

I Specification of letters Patent. t t d July 23, 19145 Applicationfiled April 7, 1914. Serial No. 830,316.

To all whom it may concern: i Be it known that we, Anvil) E. KARLBERGribbon mechanism therefor,the object of the invention being to simplifyand improve ribbon mechanism, to the end that its operation shall besure and accurate, and so that itmay be readily shifted either normallyor automatically with accuracy and without danger of derangement of orundue strain I ina-fter set forth and pointe -vided for feeding a strip3 of upon any of the parts.

lVith this object in View, the invention consists in certain novelfeatures of construction and eombinationsof arts as hereout in theclaims.

In the accompanying drawings, Figure 1 is a longitudinal sectionalviewof a stonegraphic typewriting machine embodying the improved. ribbonmechanism; Fig 2 is a front elevation partly in section, and Fig. 3 is aview partly in plan and partly in section.

1 represents the main frame or casing of the machine, in the upperportion of'which a platen 2 is located, and mechanism is propaperstep-bystep in front of the platen. T e paper feeding mechanism forms nopart of the present invention and a detail explanation of the same isunnecessary It may be stated however, that the paper feeding mechanismis connected with and operated by the movements of a universal bar 4,thelatter being actuated by arms 5 of key levers 6. The type bars 7 of themachine are pivotally mounted in a notched bar 8 and connected at theirlower ends with. the key lever arms 5,

A transverse frame 9 is secured within the main frame or casing 1 and isprovided with bearingsfor vertical shafts 10, 10, to which ribbon reels11 are secured and the inking ribbon 12 is guided from one reel to theother and between the type of the type bars and the platen by means ofsuitable guide rollers 13.

Bevel pinions 14 are secured to the lower portions of the verticalshafts 10 and mesh -with smaller bevel pinions 15 secured to shortshafts 16, the latter being mounted in suitable bearings 17 on thetransverse frame 9. The short shafts 16 are provided with clutch members18, 19 and the inner end ortions 20 of the short shafts constituteearings for a sleeve 21 mounted to slide thereon, said sleeve beingprovided at its respective ends with clutch teeth or members 2223 tocooperate wit-h the clutch members 18,19. I I v A ratchet wheel 24 ismade rigid with. the sleeve 21 and is actuated by a dog25, which ispivotally attached to and actuated by the universal bar 4 and is guidedin its movements by the slot-ted upper end of a post 26 rigid with theframe 9. Retrograde rotation ofthe ratchet wheel is prevented by a dog27 pivotally supported by the post 26.

The ratchet wheel 24 is loosely embraced by the arms 28 of a yoke 29,and this yoke is also made with arms 30 hung by means of pivoted links31 from a block 32 rigid with the frame 9. The yoke 29 is made with anoperating arm 33 which passes upribbon.

The block 32 is made with horizontal sockets 35. in which rods 36, 37are longitudinally movable, springs 38, 39 being located in said socketsbetween the inner ends of said rods and the operating arm 33 atrespective sides of the latter. Slots 40 are made in the block 32 toreceive pins 41 ont-he rods 36, 37 for guiding said rods and preventingthem from turning. At their outer ends, the rods 36, 37 are providedwith rollers 42, for a purpose hereinafter explained. The operating arm33 is made with two notches43 to receive a spring pressed dog 44 mountedin a hollow boss 45 on the block 3-2, for retaining the operating armand the parts which it controls from accidental displacement.

Each ribbon reel is provided with a hub 46 which depends below the reelas shown in Figs. 1 and 2. Each of these hubs is made I with a recess 47which is normally spanned by a sprin actuated hin ed section'48, thespring tenc ing to open this hinged section when the ribbon shall have Ibecome exhausted from the reel, as shown at the right hand side of Fig.3, but when the ribbon is on the reel, the hinged section 48 will beclosed and held so by the ribbon, as shown at the left in Fig. 3.

Durin the normal operation of the mechanism, the rollers 42 of the rods36-37, will ride on the hubs46 of the ribbon reel s, and two springs38-39 will be under approximately the same tension, so that the ratchetwheel and clutches will remain in the positions to which-they may beshifted (the spring-pressed dog 44 assisting in such retention) and sothat said ratchet wheel and clutch devices may be shifted manually.

lVhen the inking ribbon shall have become exhausted from one of thereels, the hinged section 48 of the hub 46 of this reel will be openedby the action of its spring, the roller of one of the rods (3637) willbe forced by the action of one of the springs (38 or 39) in a directionto enter the now uncovered recess in the reel hub. The roller 42 on therod (36 or 37) will first engage hub 46 at one edge of the recess. andthe pressure exerted against said rod by the spring (38 or 39) willcause the reel-hub to be positively moved sufliciently to insure theentrance of the roller 42 into the recess.

When one of the rods (36 or 37) is caused by its spring at one Side ofthe operating arms 33 to move longitudinally as above described, thetension of the spring at the opposite side of said operating arm willcause the latter tobe moved laterally. As the arm 33 is rigid with theswinging yoke 29, the latter will be moved whenspring-pressure isapplied as above described to the arm 33,

and the movement of the yoke will operateto shift the ratchet Wheel andalter (by means of the clutch devices),its operative relation to therespective reel gearings, thus effecting a reversal in direction of thefeed of the inking ribbon.

- It is apparent that when the key levers are operated,- the universalbar 4 will be actuated to operate the dog 25 and thus cause motion 7 tobe transmitted (through the ratchet wheel clutch devices and gearing) toone of the ribbon reels and that when the shifting devices are operated,either manually or automatically, motion will be transmitted to theribbon reel for moving the inking ribbon in the reverse direction.

Having fully described our invention what we claim as new and desire tosecure by Letters-Patent, is 1- 1. In ribbon mechanism for typmvritingmachines, the combination with two ribbon reel shafts, alining shafts,and gearing between said ribbon reel shafts and said alining shafts, ofa ratchet wheel between said alining shafts, clutch devices between saidratchet wheel and said alining shafts, a universal bar, key leversactuating said universal bar, a dog carried by the universal bar andengaging the ratchet wheel, and

means for shifting said ratchet wheel toshift the clutch devices.

2. In ribbon mechanism for typewriting machines, the combination withribbon reel shafts, alining shafts, and gearing between said aliningshafts and ribbon reel shafts, of a ratchet wheel between said aliningshafts, means for actuating said ratchet wheel, clutch devices betweenthe ratchet wheel and alining shafts, a yoke embracing the ratchetwheel, springs for moving said yoke to shift the ratchet wheel and theclutch devices, and means for controlling the operation of said springs.

3. In ribbon mechanism for typewriting machines, the combination with aframe, ribbon reel shafts, alining shafts, and gearing between saidalining shafts and the ribbon reel shafts of a ratchet between thealining shafts, means for actuating the ratchet wheel, clutch devicesbetween the ratchet wheel and the alining shafts, a swinging yokesuspended from the frame and embracing the ratchet wheel. and means foractuating said yoke to shift the ratchet wheel and the clutch devices.

4. In a ribbon mechanism for typewriting machines, the combination witha frame, ribbon reel shafts, alining shafts, and gearing between saidalining shafts and the ribbon reel shafts, of a ratchet wheel betweenthe alining shafts, means for actuating said ratchet wheel, clutchdevices between said ratchet wheel and the alining shafts, a block rigidwith the frame, a swinging yoke suspended from said block and embracingthe ratchet wheel, an operating arm projecting from said yoke andthrough a slot in said block, said block also having horizontal sockets,rods longitudinally movable in said sockets, springs between said rodsand the operating rod, andmeans for controlling the movements of saidrods to shift said yoke, ratchet wheel and clutch devices.

- 5. In a, ribbon mechanism for typewriting machines, the combinationwith a frame, a block rigid therewith, ribbon reels having recessedhubs, spring actuated sections for normally closing the recesses in thereel hubs, gearing for actuating the reels, and means for shifting theoperative'relation of said gearing from one reel to the other, of anoperating arm movable in said block, connectime between said arm and thegear shift- In testimony whereof, we have signed this ing means,- 1'06"Engitudinally movable in specification in the presence of two subscrib-15) said block, we on said rods and eeepering Witnesses. 1 ating Wifllthe reel hubs, springs in the block ARVID EMANUEL KARLBERG.

.- between said rod and the operating arl'n, MARSHALL BIDWELL SARGENT.

next a spring-pressed dog carried by the \Vitnesses: block for holdmgthe 01301" 1 11;; arm 1n p0s1 EDW, GROLZINGER, twn to which it may beshifted. CHAS. G. NALLE.

